SecureDrop is an open-source whistleblower submission system managed by Freedom of the Press Foundation that media organizations use to securely accept documents from anonymous sources. It was originally coded by the late Aaron Swartz.

The goal of SecureDrop is to simplify the process of using Tor and an airgapped computer viewing station (decrypted with a private key) to protect the identity of a whistleblower uploading documents.

(From video) Garrett Robinson:

“The impetus behind SecureDrop is that we (FPF) want to restore the balance between governments and journalists who want to communicate with anonymous sources. Historically, the U.S. has had really strong press freedoms. This is essential for a functioning democracy.”